import { __io } from "https://deno.land/x/deno@v0.30.0/cli/js/lib.deno_runtime.d.ts";
const { toAsyncIterator } = __io;
UNSTABLE: Make Reader into AsyncIterable? Remove this?
Turns r into async iterator.
for await (const chunk of toAsyncIterator(reader)) {
console.log(chunk)
}